Metal oxide resistive sensors for carbon dioxide detection

Design and fabrication of poly-Si/SiO2 Fabry–Perot filter for nondispersive IR CO2 sensors

“…1,2) Therefore, developing cost-effective CO 2 sensors has been attracting great interest because of the demand for real-time CO 2 monitoring [3][4][5] at critical CO 2 emission areas. CO 2 detectors can be mainly classified into metal-oxide, 6,7) acoustic, 8,9) catalytic, 10) and optical [11][12][13] sensors. Optical CO 2 sensors are among the most discussed sensor types because of their high sensitivity, selectivity, and long-term stability.…”

Metal–organic framework-derived metal oxides for resistive gas sensing: a review

“…[1][2][3][4] The sensors adjust their resistance by manipulating the interaction between gases and delicate substances, allowing for accurate gas concentration measurements. [5][6][7] There are many advantages of using resistive gas sensors. Their remarkable sensitivity and swift reaction allow them to identify even the smallest variations in gas concentration.…”

Artificial Olfactory Biohybrid System: An Evolving Sense of Smell

“…Although electronic nose (EN) has been applied to detect and discriminate different VOCs sensitively and rapidly, [ 7 ] ENs are not per se feasible to measure odor qualities. The seeming similarity between the biological functional structure of the sense of smell and the construction of ENs falls short.…”

“…In addition, EN devices still present hardware and software challenges. Sensor types such as metal oxide semiconductor, [ 7b ] quartz crystal microbalance (QCM), [ 9 ] conducting polymer, [ 7c ] colorimetric, [ 10 ] and surface acoustic wave (SAW) [ 11 ] are frequently used in EN devices. Unfortunately, these sensors are sensitive to temperature and humidity changes, which indeed are a serious drawback of ENs, especially in the food and beverage industries.…”